Tips for Use and Storage: 1. If you are going to leave your printer inactive for more than a couple of days, retract the filament to protect your printer nozzle. 2. To extend the life of your filament, store it in a dry, sealed bag or box. Preferably, add a packet of Silca Gel to absorb any excess moisture. 3. When storing your filament, feed the loose end through the holes on the edge of the filament reel to stop it unwinding, so that it feeds properly when you next use it.